retinoscopy

Retinoscopy (skiascopy) is an objective method of optometry. Reconnaissance is a method of measuring the refractive state of the eye by his method. Long-term training is required to master the truth. The retinoscopy method uses a retinoscope to project a beam of light onto the refraction of the patient's eye to reach the retina, and then the reflected light from the retina reaches the retinoscopy mirror and passes through the retinoscopy peephole (referred to as the resection hole). observed. Basic Information Specialist Category: Ophthalmic Examination Category: Applicable gender: whether it is fasting: Tips: Maintain a normal diet and schedule. Normal value Under normal circumstances, the moving light is mostly red, and the reverse light is mostly yellowish, grayish white, gray, and the high refractive error is mostly dark gray or even indistinguishable. The light is between 3.0-4.0D and minus 4.0-5.0D, and the color and dynamics are obvious. Clinical significance Abnormal results for intractable diseases such as irregular astigmatism, amblyopia, nystagmus, cataract, and mental retardation. The optometry method is easy to operate and the results are reliable. The person in need of examination is ametropia. Precautions Inappropriate people: glaucoma patients. Contraindications before examination: Refractive errors must be corrected. Requirements for inspection: Eliminate patient adjustments. Inspection process The retinoscopy method uses a retinoscope to project a beam of light onto the refraction of the patient's eye to reach the retina, and then the reflected light from the retina reaches the retinoscopy mirror and passes through the retinoscopy peephole (referred to as the resection hole). observed. This retinal reflected light, that is, "red light reflection", is the main basis for retinoscopy analysis. The patient's refractive state is different, and the smoothing and reverse motion formed by the red light reflection are also different. The optometrist analyzes the different effects and removes the corresponding lens in the standard lens case to resolve the effect until the neutral point is found. The standard lens used to find the neutral point is closely related to the patient's refractive status.